Why does my script makes After Effects crash?

[Otávio Nascimento]

Hi,

I made a script UI with a ‘edit text’ and a button. It apply to selected layers a effect that is inside the ‘edit text’. But when typing the effect wrong and using the button to apply, After Effects freezes. What can I do to make After Effects not crash when trying to apply an effect that doesn’t exist?

function addEffect(findString)

{

if (myFindString == “”) {

return;

}

var curItem = app.project.activeItem.selectedLayers;

for (i=0; i

[Otávio Nascimento]

function addEffect(myFindString)
{
    if (myFindString == "") {
        return;
    }
    var curItem = app.project.activeItem.selectedLayers;
    for (i=0; i<curItem.length; i++){
        var layerI = curItem[i].property("ADBE Effect Parade");
        layerI.addProperty(myFindString);
    }
}

[Dan Ebberts]

You could capture the error using try/catch, like this example:

var myLayer = app.project.activeItem.layer(1);
var myEffect = "xxxx";
try{
    myLayer.property("Effects").addProperty(myEffect);
}catch(err){
    alert('"' + myEffect + '" is not a valid effect name.');
}

[Otávio Nascimento]

Thank you, thats what I needed.